[Problems in radiotherapy of lung cancer. 1. Its primary site and therapeutic effects].
D004562:Electrocardiography; D006321:Heart / Q000528:radiation effects*; D006801:Humans; D008175:Lung Neoplasms / Q000532:radiotherapy*; D008297:Male; D008875:Middle Aged; D009362:Neoplasm Metastasis; D011830:Radiation Effects